Which group of scientists introduced the three domain system?

The three-domain system was introduced by a group of scientists led by Carl Woese. In 1990, Woese, along with Otto Kandler and Mark Wheelis, published their findings that classified all cellular life into three domains: Archaea, Bacteria, and Eukarya. Their work was based on the analysis of ribosomal RNA (rRNA) sequences, which provided molecular evidence for the distinctness of these groups.